Question

Решить неравенство (1/27)^-2x < 9^3

Answer 1

$(frac{1}{27})^{-2x}<9^{3}\\(3^{-3})^{-2x}<(3^{2})^{3}\\3^{6x}<3^{6}\\6x<6\\x<1\\xin(-infty;1)$